KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q162254: BUG: Container in Grid Column Fires Wrong Event

Article: Q162254
Product(s): Microsoft FoxPro
Version(s): WINDOWS: 5.0a,3.0,3.0b,5.0,6.0
Operating System(s): 
Keyword(s): kbtool kbvfp kbvfp300bBUG kbvfp500aBUG kbvfp500bugkbbuglist
Last Modified: 26-AUG-1999

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a, 6.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

If a grid column text object is replaced with a container object, methods fire
incorrectly. Specifically, when the column gets focus, the GotFocus() method
does not fire. When the column loses focus, the LostFocus method fires twice.

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products listed at
the beginning of this article. We are researching this problem and will post new
information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Steps to Reproduce Problem
--------------------------

1. Place the following code in a program called Colfocus.prg:

         * Begin ColFocus.prg

        CLEAR ALL
        CLEAR
        CLOSE ALL
        USE HOME()+ "SAMPLES\DATA\EMPLOYEE"  && In Visual FoxPro 6.0, locate
                                             && the employee table and adjust
                                             && the path accordingly.

        *-- Create a form
        MyForm=CREATEOBJECT("Form")
        WITH MyForm
           .AutoCenter= .T.
           .WindowType=1       && Modal
           .AddObject("Edit1", "EditBox")
           WITH .Edit1
             .Visible=.T.
             .Height= 23
             .Width= MyForm.Width
             .Value="Column3.Container.GotFocus() never fires"
           ENDWITH

        *-- Add a Grid
        .AddObject("Grid1", "Grid")
        WITH .Grid1
           .Top=40
           .Visible= .T.
           .ColumnCount=2

           *-- Add a container to a column
           .AddObject("Column3", "Column")
           .Column3.RemoveObject("Text1")
           .Column3.AddObject("Container1", "MyContainer")
           .Column3.Visible= .T.
           .Column3.Container1.Visible=.T.
        ENDWITH
        .SHOW()
        ENDWITH

        *-- GotFocus() and LostFocus() container
        DEFINE CLASS MyContainer as Container
          BackColor=RGB(255,0,0)
          BackStyle=1

          PROCEDURE GotFocus
            ACTIVATE SCREEN
            ?" In GotFocus of Column 3"
          ENDPROC

          PROCEDURE LostFocus
            ACTIVATE SCREEN
            ?"In LostFocus of Column 3 "
          ENDPROC

        ENDDEFINE

     * End ColFocus.prg

2. Run ColFocus.prg.

3. When the Form appears, tab or arrow over to Column 3 of the grid. NOTE: The
  GotFocus() method of Column 3 does not fire.

4. Move off of Column 3.

  NOTE: The LostFocus() method of Column 3 fires twice.

Additional query words: kbvfp500 kbvfp600

======================================================================
Keywords          : kbtool kbvfp kbvfp300bBUG kbvfp500aBUG kbvfp500bug kbbuglist
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500 kbVFP600 kbVFP500a
Version           : WINDOWS: 5.0a,3.0,3.0b,5.0,6.0
Issue type        : kbbug

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.